Also make sure you have fully patched this server. If you are running off a CD install you need to download and install the ESXi updates manually. If you are using vSphere Essentials then it is much easier with the update manager.

Also make sure you have fully patched this server. If you are running off a CD install you need to download and install the ESXi updates manually. If you are using vSphere Essentials then it is much easier with the update manager.

when does this error happen? On boot up, after VM's have started, etc? If it happens on boot up of the ESXi, reseat all hardware inside the server and leave disconnected from power. If the problem persists, try doing an install with the latest dell ESXi version for the version you are running being careful to preserve your existing datastore(s). This can repair partial or broken ESXi patch installs that can cause this kind of instability. If that doesn't work, you may actually have bad hardware/RAM.